Taiwan's annual military exercise, Han Kuang, begins on Wednesday as the island ramps up its defence against a possible invasion from China. Billed as the largest and longest one so far, this year's Han Kuang will last for about 10 days, about twice the duration of last year's drill.

The early stages of the annual Han Kuang exercises would also focus on testing how Taiwan’s military can decentralize command in the event of a crippling communications attack.

Taiwan is launching its largest-ever military exercises today, starting with simulated attacks on its command systems and infrastructure in the event of a Chinese invasion, senior defense officials said.